Semiconductor laser device

Abstract

Abstract PURPOSE:To form a semiconductor laser device which has a light detector for a monitor capable of obtaining a large output current, can separate an emitted light and a reflected light and also, can be easily manufactured by a method wherein a trapezoidal chip carrier, whereon the light detector for a monitor is fixed, is fixed on the surface of the same stem base as a stem base whereon a heat sink, whereon a semiconductor laser chip is fixed, is fixed. CONSTITUTION:A heat sink 2, whereon a semiconductor laser chip 1 is fixed, consisting of silicons and so on is fixed on one surface of a stem base 3 with such a brazing metal as a Pb-Sn eutectic solder, while a light detector 4 for a monitor is fixed on the slant face of a chip carrier 5 formed in a trapezoidal form with such a brazing metal as an Au-Sn eutectic solder and the light detecting surface is opposed to one end surface of the semiconductor laser chip. Moreover, the chip carrier 5 is fixed on the same surface as the surface of the stem base 3, whereon the heat sink 2 is fixed, with a Pb-Sn eutectic solder and so on. As the mounting position of the light detector 4 for a monitor can be most approached the semiconductor laser chip 1 regardless of the form of the stem base 3, even the light-receiving element having the small light detecting surface can obtain a large monitoring output current.

Inventors

• 👤 Masato Nakajima
• 👤 真人 中島

Bibliographic Details